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1. OPERATIONAL OVERVIEW
1-23
1.18.2 EBL reference
The EBL readout is affixed by "R" (relative) if it is relative to own ship's heading, "T" (true) if it is
referenced to the north. You may choose relative or true in the head-up modes; in all other modes
it is always TRUE. True bearing requires a heading sensor.
1. Press the MENU key to open the menu.
2. Choose the Mark menu and press the ENTER key.
3. Choose EBL Reference and press the ENTER key.
4. Choose Relative or True as appropriate and press the ENTER key.
5. Press the MENU key to close the menu.
1.19 Measuring the Range and Bearing Between Two
Targets
You may shift the origin of the EBL to measure the range and bearing between two targets.
1. Press the EBL key to choose the
bearing indication of No. 1 EBL or No.
2 EBL (whichever you want to use).
(The currently active marker is
enclosed with >.....<).
2. Place the cursor on target A.
3. Press the OFFCENTER key to shift
the EBL origin to the location chosen
at step 2. Use the trackball to bisect
target B with the EBL.
4. Use the VRM key to display the VRM
having the same number as the EBL
activated at step 1.
5. Roll the trackball to set the VRM on
the inner edge of target B.
6. Read the bearing and range indica-
tions at the bottom of the screen.
To return the origin of an EBL to the
screen center, choose appropriate
EBL with the EBL key, press the OFF-
CENTER key followed by the ENTER
key. Pressing the OFFCENTER key
alone places the EBL origin at the
screen center and cursor location alter-
nately.
Relative
True
No. 1
EBL
No. 2
EBL
EBL1
EBL2
>140.0
°
R<
335.2
°
R
VRM1
VRM2
>0.500NM<
0.980NM
Tgt D
EBL origin
+
+
Tgt B
Range/bearing
between targets A and B
N
o. 1
V
RM
Tgt A
Tgt C
No. 2
VRM
Range/bearing
between targets C and D